Q. Please throw some light on the word "Ummi" used
in 7:157 in Quran. Most of the translators attributed
"illiterate" to Prophet Muhammad, while translating
this word ... i like to ask you to provide me, with the sayings
of our noble scholars, about the explanation of this word.

A. The scholars of Ahl al-Sunna have explained Ummi as
referring to the fact that the Prophet, blessings and Peace upon
him is directly taught by Allah, not by books or scholars of
religion. There are many other meanings, but this seems to be the
most comprehensive. In this sense all Prophets are Ummi. The
restricted sense means: one who neither reads nor counts, as the
Prophet, blessings and Peace upon him said: "We are ummis,
we neither read nor count."

Another sense refers to "one not following the Laws of
the Torah and the Injil" and refers primarily to those in
his time who were following neither the Jews nor the Christians.

Another sense is in opposition to Kitabi [= of the Book] and
refers to all Muslims.

In fiqh it refers to one who mispronounces Arabic. Imam Nawawi
said in Minhaj al-Talibin: "The learned is not to pray
behind the Ummi. The Ummi is the one who omits pronouncing
certain letters of theFatiha, such as a shadda."

Perhaps "unlettered" is better than
"illiterate" because the latter is negative in the
English language, whereas the former is not necessarily negative.

Mawlana Jalal al-Din Rumi -- may Allah raise his rank -- wrote
in his masterpiece, Mathnavi: How could the one who wrote over
the moon when he cut it in two, be illiterate?